40025633 has 6 divisors (see below), whose sum is σ = 42518886. Its totient is φ = 37670912.

The previous prime is 40025627. The next prime is 40025639. The reversal of 40025633 is 33652004.

It is an interprime number because it is at equal distance from previous prime (40025627) and next prime (40025639).

It can be written as a sum of positive squares in 3 ways, for example, as 5121169 + 34904464 = 2263^2 + 5908^2 .

It is not a de Polignac number, because 40025633 - 2¹⁸ = 39763489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40025599 and 40025608.

It is not an unprimeable number, because it can be changed into a prime (40025639) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68960 + ... + 69537.

It is an arithmetic number, because the mean of its divisors is an integer number (7086481).

Almost surely, 2^40025633 is an apocalyptic number.

It is an amenable number.

40025633 is a deficient number, since it is larger than the sum of its proper divisors (2493253).

40025633 is a wasteful number, since it uses less digits than its factorization.

40025633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138531 (or 138514 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 40025633 is about 6326.5814623697. The cubic root of 40025633 is about 342.0682267586.

Adding to 40025633 its reverse (33652004), we get a palindrome (73677637).

The spelling of 40025633 in words is "forty million, twenty-five thousand, six hundred thirty-three".